File: | src/usr.bin/telnet/sys_bsd.c |
Warning: | line 219, column 5 Value stored to 'old' is never read |
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1 | /* $OpenBSD: sys_bsd.c,v 1.35 2019/06/28 13:35:04 deraadt Exp $ */ |
2 | /* $NetBSD: sys_bsd.c,v 1.11 1996/02/28 21:04:10 thorpej Exp $ */ |
3 | |
4 | /* |
5 | * Copyright (c) 1988, 1990, 1993 |
6 | * The Regents of the University of California. All rights reserved. |
7 | * |
8 | * Redistribution and use in source and binary forms, with or without |
9 | * modification, are permitted provided that the following conditions |
10 | * are met: |
11 | * 1. Redistributions of source code must retain the above copyright |
12 | * notice, this list of conditions and the following disclaimer. |
13 | * 2. Redistributions in binary form must reproduce the above copyright |
14 | * notice, this list of conditions and the following disclaimer in the |
15 | * documentation and/or other materials provided with the distribution. |
16 | * 3. Neither the name of the University nor the names of its contributors |
17 | * may be used to endorse or promote products derived from this software |
18 | * without specific prior written permission. |
19 | * |
20 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
21 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
22 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
23 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
24 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
25 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
26 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
27 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
28 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
29 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
30 | * SUCH DAMAGE. |
31 | */ |
32 | |
33 | #include "telnet_locl.h" |
34 | |
35 | #include <sys/ioctl.h> |
36 | #include <sys/socket.h> |
37 | #include <arpa/telnet.h> |
38 | #include <errno(*__errno()).h> |
39 | #include <poll.h> |
40 | #include <string.h> |
41 | #include <unistd.h> |
42 | |
43 | /* |
44 | * The following routines try to encapsulate what is system dependent |
45 | * (at least between 4.x and dos) which is used in telnet.c. |
46 | */ |
47 | |
48 | int |
49 | tout, /* Output file descriptor */ |
50 | tin, /* Input file descriptor */ |
51 | net; |
52 | |
53 | #define TELNET_FD_TOUT0 0 |
54 | #define TELNET_FD_TIN1 1 |
55 | #define TELNET_FD_NET2 2 |
56 | #define TELNET_FD_NUM3 3 |
57 | |
58 | struct termios old_tc = { 0 }; |
59 | |
60 | void |
61 | init_sys(void) |
62 | { |
63 | tout = fileno(stdout)(!__isthreaded ? (((&__sF[1]))->_file) : (fileno)((& __sF[1]))); |
64 | tin = fileno(stdin)(!__isthreaded ? (((&__sF[0]))->_file) : (fileno)((& __sF[0]))); |
65 | |
66 | errno(*__errno()) = 0; |
67 | } |
68 | |
69 | |
70 | /* |
71 | * TerminalSpecialChars() |
72 | * |
73 | * Look at an input character to see if it is a special character |
74 | * and decide what to do. |
75 | * |
76 | * Output: |
77 | * |
78 | * 0 Don't add this character. |
79 | * 1 Do add this character |
80 | */ |
81 | |
82 | int |
83 | TerminalSpecialChars(int c) |
84 | { |
85 | if (c == termIntCharnew_tc.c_cc[8]) { |
86 | intp(); |
87 | return 0; |
88 | } else if (c == termQuitCharnew_tc.c_cc[9]) { |
89 | #ifdef KLUDGELINEMODE1 |
90 | if (kludgelinemode) |
91 | sendbrk(); |
92 | else |
93 | #endif |
94 | sendabort(); |
95 | return 0; |
96 | } else if (c == termEofCharnew_tc.c_cc[0]) { |
97 | if (my_want_state_is_will(TELOPT_LINEMODE)(options[34]&0x02)) { |
98 | sendeof(); |
99 | return 0; |
100 | } |
101 | return 1; |
102 | } else if (c == termSuspCharnew_tc.c_cc[10]) { |
103 | sendsusp(); |
104 | return(0); |
105 | } else if (c == termFlushCharnew_tc.c_cc[15]) { |
106 | xmitAO(); /* Transmit Abort Output */ |
107 | return 0; |
108 | } else if (!MODE_LOCAL_CHARS(globalmode)((globalmode)&(0x01|0x02))) { |
109 | if (c == termKillCharnew_tc.c_cc[5]) { |
110 | xmitEL(); |
111 | return 0; |
112 | } else if (c == termEraseCharnew_tc.c_cc[3]) { |
113 | xmitEC(); /* Transmit Erase Character */ |
114 | return 0; |
115 | } |
116 | } |
117 | return 1; |
118 | } |
119 | |
120 | void |
121 | TerminalSaveState(void) |
122 | { |
123 | tcgetattr(0, &old_tc); |
124 | |
125 | new_tc = old_tc; |
126 | } |
127 | |
128 | cc_t * |
129 | tcval(int func) |
130 | { |
131 | switch(func) { |
132 | case SLC_IP3: return(&termIntCharnew_tc.c_cc[8]); |
133 | case SLC_ABORT7: return(&termQuitCharnew_tc.c_cc[9]); |
134 | case SLC_EOF8: return(&termEofCharnew_tc.c_cc[0]); |
135 | case SLC_EC10: return(&termEraseCharnew_tc.c_cc[3]); |
136 | case SLC_EL11: return(&termKillCharnew_tc.c_cc[5]); |
137 | case SLC_XON15: return(&termStartCharnew_tc.c_cc[12]); |
138 | case SLC_XOFF16: return(&termStopCharnew_tc.c_cc[13]); |
139 | case SLC_FORW117: return(&termForw1Charnew_tc.c_cc[1]); |
140 | case SLC_FORW218: return(&termForw2Charnew_tc.c_cc[1]); |
141 | case SLC_SUSP9: return(&termSuspCharnew_tc.c_cc[10]); |
142 | case SLC_AO4: return(&termFlushCharnew_tc.c_cc[15]); |
143 | case SLC_EW12: return(&termWerasCharnew_tc.c_cc[4]); |
144 | case SLC_RP13: return(&termRprntCharnew_tc.c_cc[6]); |
145 | case SLC_LNEXT14: return(&termLiteralNextCharnew_tc.c_cc[14]); |
146 | case SLC_AYT5: return(&termAytCharnew_tc.c_cc[18]); |
147 | case SLC_SYNCH1: |
148 | case SLC_BRK2: |
149 | case SLC_EOR6: |
150 | default: |
151 | return(NULL((void *)0)); |
152 | } |
153 | } |
154 | |
155 | void |
156 | TerminalDefaultChars(void) |
157 | { |
158 | memcpy(new_tc.c_cc, old_tc.c_cc, sizeof(old_tc.c_cc)); |
159 | } |
160 | |
161 | /* |
162 | * TerminalNewMode - set up terminal to a specific mode. |
163 | * MODE_ECHO: do local terminal echo |
164 | * MODE_FLOW: do local flow control |
165 | * MODE_TRAPSIG: do local mapping to TELNET IAC sequences |
166 | * MODE_EDIT: do local line editing |
167 | * |
168 | * Command mode: |
169 | * MODE_ECHO|MODE_EDIT|MODE_FLOW|MODE_TRAPSIG |
170 | * local echo |
171 | * local editing |
172 | * local xon/xoff |
173 | * local signal mapping |
174 | * |
175 | * Linemode: |
176 | * local/no editing |
177 | * Both Linemode and Single Character mode: |
178 | * local/remote echo |
179 | * local/no xon/xoff |
180 | * local/no signal mapping |
181 | */ |
182 | |
183 | static void susp(); |
184 | static void ayt(); |
185 | |
186 | void |
187 | TerminalNewMode(int f) |
188 | { |
189 | static int prevmode = 0; |
190 | struct termios tmp_tc; |
191 | int onoff; |
192 | int old; |
193 | cc_t esc; |
194 | |
195 | globalmode = f&~MODE_FORCE0x1000; |
196 | if (prevmode == f) |
197 | return; |
198 | |
199 | /* |
200 | * Write any outstanding data before switching modes |
201 | * ttyflush() returns 0 only when there is no more data |
202 | * left to write out, it returns -1 if it couldn't do |
203 | * anything at all, otherwise it returns 1 + the number |
204 | * of characters left to write. |
205 | */ |
206 | old = ttyflush(SYNCHing|flushout); |
207 | if (old < 0 || old > 1) { |
208 | tcgetattr(tin, &tmp_tc); |
209 | do { |
210 | /* |
211 | * Wait for data to drain, then flush again. |
212 | */ |
213 | if (isatty(tin)) |
214 | tcsetattr(tin, TCSADRAIN1, &tmp_tc); |
215 | old = ttyflush(SYNCHing|flushout); |
216 | } while (old < 0 || old > 1); |
217 | } |
218 | |
219 | old = prevmode; |
Value stored to 'old' is never read | |
220 | prevmode = f&~MODE_FORCE0x1000; |
221 | tmp_tc = new_tc; |
222 | |
223 | if (f&MODE_ECHO0x0200) { |
224 | tmp_tc.c_lflag |= ECHO0x00000008; |
225 | tmp_tc.c_oflag |= ONLCR0x00000002; |
226 | if (crlf) |
227 | tmp_tc.c_iflag |= ICRNL0x00000100; |
228 | } else { |
229 | tmp_tc.c_lflag &= ~ECHO0x00000008; |
230 | tmp_tc.c_oflag &= ~ONLCR0x00000002; |
231 | } |
232 | |
233 | if ((f&MODE_FLOW0x0100) == 0) { |
234 | tmp_tc.c_iflag &= ~(IXOFF0x00000400|IXON0x00000200); /* Leave the IXANY bit alone */ |
235 | } else { |
236 | if (restartany < 0) { |
237 | tmp_tc.c_iflag |= IXOFF0x00000400|IXON0x00000200; /* Leave the IXANY bit alone */ |
238 | } else if (restartany > 0) { |
239 | tmp_tc.c_iflag |= IXOFF0x00000400|IXON0x00000200|IXANY0x00000800; |
240 | } else { |
241 | tmp_tc.c_iflag |= IXOFF0x00000400|IXON0x00000200; |
242 | tmp_tc.c_iflag &= ~IXANY0x00000800; |
243 | } |
244 | } |
245 | |
246 | if ((f&MODE_TRAPSIG0x02) == 0) { |
247 | tmp_tc.c_lflag &= ~ISIG0x00000080; |
248 | localchars = 0; |
249 | } else { |
250 | tmp_tc.c_lflag |= ISIG0x00000080; |
251 | localchars = 1; |
252 | } |
253 | |
254 | if (f&MODE_EDIT0x01) { |
255 | tmp_tc.c_lflag |= ICANON0x00000100; |
256 | } else { |
257 | tmp_tc.c_lflag &= ~ICANON0x00000100; |
258 | tmp_tc.c_iflag &= ~ICRNL0x00000100; |
259 | tmp_tc.c_cc[VMIN16] = 1; |
260 | tmp_tc.c_cc[VTIME17] = 0; |
261 | } |
262 | |
263 | if ((f&(MODE_EDIT0x01|MODE_TRAPSIG0x02)) == 0) { |
264 | tmp_tc.c_lflag &= ~IEXTEN0x00000400; |
265 | } |
266 | |
267 | if (f&MODE_SOFT_TAB0x08) { |
268 | # ifdef OXTABS0x00000004 |
269 | tmp_tc.c_oflag |= OXTABS0x00000004; |
270 | # endif |
271 | # ifdef TABDLY |
272 | tmp_tc.c_oflag &= ~TABDLY; |
273 | tmp_tc.c_oflag |= TAB3; |
274 | # endif |
275 | } else { |
276 | # ifdef OXTABS0x00000004 |
277 | tmp_tc.c_oflag &= ~OXTABS0x00000004; |
278 | # endif |
279 | # ifdef TABDLY |
280 | tmp_tc.c_oflag &= ~TABDLY; |
281 | # endif |
282 | } |
283 | |
284 | if (f&MODE_LIT_ECHO0x10) { |
285 | # ifdef ECHOCTL0x00000040 |
286 | tmp_tc.c_lflag &= ~ECHOCTL0x00000040; |
287 | # endif |
288 | } else { |
289 | # ifdef ECHOCTL0x00000040 |
290 | tmp_tc.c_lflag |= ECHOCTL0x00000040; |
291 | # endif |
292 | } |
293 | |
294 | if (f == -1) { |
295 | onoff = 0; |
296 | } else { |
297 | if (f & MODE_INBIN0x0400) |
298 | tmp_tc.c_iflag &= ~ISTRIP0x00000020; |
299 | else |
300 | tmp_tc.c_iflag |= ISTRIP0x00000020; |
301 | if ((f & MODE_OUTBIN0x0800) || (f & MODE_OUT80x8000)) { |
302 | tmp_tc.c_cflag &= ~(CSIZE0x00000300|PARENB0x00001000); |
303 | tmp_tc.c_cflag |= CS80x00000300; |
304 | if(f & MODE_OUTBIN0x0800) |
305 | tmp_tc.c_oflag &= ~OPOST0x00000001; |
306 | else |
307 | tmp_tc.c_oflag |= OPOST0x00000001; |
308 | |
309 | } else { |
310 | tmp_tc.c_cflag &= ~(CSIZE0x00000300|PARENB0x00001000); |
311 | tmp_tc.c_cflag |= old_tc.c_cflag & (CSIZE0x00000300|PARENB0x00001000); |
312 | tmp_tc.c_oflag |= OPOST0x00000001; |
313 | } |
314 | onoff = 1; |
315 | } |
316 | |
317 | if (f != -1) { |
318 | (void) signal(SIGTSTP18, susp); |
319 | (void) signal(SIGINFO29, ayt); |
320 | #if defined(NOKERNINFO0x02000000) |
321 | tmp_tc.c_lflag |= NOKERNINFO0x02000000; |
322 | #endif |
323 | /* |
324 | * We don't want to process ^Y here. It's just another |
325 | * character that we'll pass on to the back end. It has |
326 | * to process it because it will be processed when the |
327 | * user attempts to read it, not when we send it. |
328 | */ |
329 | # ifdef VDSUSP11 |
330 | tmp_tc.c_cc[VDSUSP11] = (cc_t)(_POSIX_VDISABLE(0377)); |
331 | # endif |
332 | /* |
333 | * If the VEOL character is already set, then use VEOL2, |
334 | * otherwise use VEOL. |
335 | */ |
336 | esc = (rlogin != _POSIX_VDISABLE(0377)) ? rlogin : escape; |
337 | if ((tmp_tc.c_cc[VEOL1] != esc) |
338 | # ifdef VEOL22 |
339 | && (tmp_tc.c_cc[VEOL22] != esc) |
340 | # endif |
341 | ) { |
342 | if (tmp_tc.c_cc[VEOL1] == (cc_t)(_POSIX_VDISABLE(0377))) |
343 | tmp_tc.c_cc[VEOL1] = esc; |
344 | # ifdef VEOL22 |
345 | else if (tmp_tc.c_cc[VEOL22] == (cc_t)(_POSIX_VDISABLE(0377))) |
346 | tmp_tc.c_cc[VEOL22] = esc; |
347 | # endif |
348 | } |
349 | } else { |
350 | sigset_t mask; |
351 | (void) signal(SIGINFO29, ayt_status); |
352 | (void) signal(SIGTSTP18, SIG_DFL(void (*)(int))0); |
353 | sigemptyset(&mask); |
354 | sigaddset(&mask, SIGTSTP18); |
355 | sigprocmask(SIG_UNBLOCK2, &mask, NULL((void *)0)); |
356 | tmp_tc = old_tc; |
357 | } |
358 | if (isatty(tin) && tcsetattr(tin, TCSADRAIN1, &tmp_tc) == -1) |
359 | tcsetattr(tin, TCSANOW0, &tmp_tc); |
360 | |
361 | ioctl(tin, FIONBIO((unsigned long)0x80000000 | ((sizeof(int) & 0x1fff) << 16) | ((('f')) << 8) | ((126))), &onoff); |
362 | ioctl(tout, FIONBIO((unsigned long)0x80000000 | ((sizeof(int) & 0x1fff) << 16) | ((('f')) << 8) | ((126))), &onoff); |
363 | } |
364 | |
365 | void |
366 | TerminalSpeeds(long *ispeed, long *ospeed) |
367 | { |
368 | long in, out; |
369 | |
370 | out = cfgetospeed(&old_tc); |
371 | in = cfgetispeed(&old_tc); |
372 | if (in == 0) |
373 | in = out; |
374 | |
375 | *ispeed = in; |
376 | *ospeed = out; |
377 | } |
378 | |
379 | int |
380 | TerminalWindowSize(long *rows, long *cols) |
381 | { |
382 | struct winsize ws; |
383 | |
384 | if (ioctl(fileno(stdin)(!__isthreaded ? (((&__sF[0]))->_file) : (fileno)((& __sF[0]))), TIOCGWINSZ((unsigned long)0x40000000 | ((sizeof(struct winsize) & 0x1fff ) << 16) | ((('t')) << 8) | ((104))), &ws) == 0) { |
385 | *rows = ws.ws_row; |
386 | *cols = ws.ws_col; |
387 | return 1; |
388 | } |
389 | return 0; |
390 | } |
391 | |
392 | /* |
393 | * Various signal handling routines. |
394 | */ |
395 | |
396 | void |
397 | deadpeer(int sig) |
398 | { |
399 | setcommandmode(); |
400 | longjmp(peerdied, -1); |
401 | } |
402 | |
403 | void |
404 | intr(int sig) |
405 | { |
406 | if (localchars) { |
407 | intp(); |
408 | return; |
409 | } |
410 | setcommandmode(); |
411 | longjmp(toplevel, -1); |
412 | } |
413 | |
414 | void |
415 | intr2(int sig) |
416 | { |
417 | if (localchars) { |
418 | #ifdef KLUDGELINEMODE1 |
419 | if (kludgelinemode) |
420 | sendbrk(); |
421 | else |
422 | #endif |
423 | sendabort(); |
424 | return; |
425 | } |
426 | } |
427 | |
428 | void |
429 | susp(int sig) |
430 | { |
431 | if ((rlogin != _POSIX_VDISABLE(0377)) && rlogin_susp()) |
432 | return; |
433 | if (localchars) |
434 | sendsusp(); |
435 | } |
436 | |
437 | void |
438 | sendwin(int sig) |
439 | { |
440 | if (connected) { |
441 | sendnaws(); |
442 | } |
443 | } |
444 | |
445 | void |
446 | ayt(int sig) |
447 | { |
448 | if (connected) |
449 | sendayt(); |
450 | else |
451 | ayt_status(sig); |
452 | } |
453 | |
454 | |
455 | void |
456 | sys_telnet_init(void) |
457 | { |
458 | int one = 1; |
459 | |
460 | (void) signal(SIGINT2, intr); |
461 | (void) signal(SIGQUIT3, intr2); |
462 | (void) signal(SIGPIPE13, deadpeer); |
463 | (void) signal(SIGWINCH28, sendwin); |
464 | (void) signal(SIGTSTP18, susp); |
465 | (void) signal(SIGINFO29, ayt); |
466 | |
467 | setconnmode(0); |
468 | |
469 | /* |
470 | * Mark the socket as non-blocking and receive urgent data inline. |
471 | * (The latter is required for correct telnet operation when a |
472 | * second urgent is sent before telnet can process the first.) |
473 | */ |
474 | ioctl(net, FIONBIO((unsigned long)0x80000000 | ((sizeof(int) & 0x1fff) << 16) | ((('f')) << 8) | ((126))), &one); |
475 | if (setsockopt(net, SOL_SOCKET0xffff, SO_OOBINLINE0x0100, &one, sizeof(one)) == -1) { |
476 | perror("setsockopt"); |
477 | } |
478 | } |
479 | |
480 | /* |
481 | * Process rings - |
482 | * |
483 | * This routine tries to fill up/empty our various rings. |
484 | * |
485 | * The parameter specifies whether this is a poll operation, |
486 | * or a block-until-something-happens operation. |
487 | * |
488 | * The return value is 1 if something happened, 0 if not. |
489 | */ |
490 | |
491 | int |
492 | process_rings(int netin, int netout, int netex, int ttyin, int ttyout, |
493 | int dopoll) /* If 0, then block until something to do */ |
494 | { |
495 | int c; |
496 | /* One wants to be a bit careful about setting returnValue |
497 | * to one, since a one implies we did some useful work, |
498 | * and therefore probably won't be called to block next |
499 | * time (TN3270 mode only). |
500 | */ |
501 | int returnValue = 0; |
502 | struct pollfd pfd[TELNET_FD_NUM3]; |
503 | |
504 | if (ttyout) { |
505 | pfd[TELNET_FD_TOUT0].fd = tout; |
506 | pfd[TELNET_FD_TOUT0].events = POLLOUT0x0004; |
507 | } else { |
508 | pfd[TELNET_FD_TOUT0].fd = -1; |
509 | } |
510 | if (ttyin) { |
511 | pfd[TELNET_FD_TIN1].fd = tin; |
512 | pfd[TELNET_FD_TIN1].events = POLLIN0x0001; |
513 | } else { |
514 | pfd[TELNET_FD_TIN1].fd = -1; |
515 | } |
516 | if (netout || netin || netex) { |
517 | pfd[TELNET_FD_NET2].fd = net; |
518 | pfd[TELNET_FD_NET2].events = 0; |
519 | if (netout) |
520 | pfd[TELNET_FD_NET2].events |= POLLOUT0x0004; |
521 | if (netin) |
522 | pfd[TELNET_FD_NET2].events |= POLLIN0x0001; |
523 | if (netex) |
524 | pfd[TELNET_FD_NET2].events |= POLLRDBAND0x0080; |
525 | } else { |
526 | pfd[TELNET_FD_NET2].fd = -1; |
527 | } |
528 | |
529 | if ((c = poll(pfd, TELNET_FD_NUM3, dopoll ? 0 : INFTIM(-1))) == -1) { |
530 | return 0; |
531 | } |
532 | |
533 | /* |
534 | * Any urgent data? |
535 | */ |
536 | if (pfd[TELNET_FD_NET2].revents & POLLRDBAND0x0080) { |
537 | SYNCHing = 1; |
538 | (void) ttyflush(1); /* flush already enqueued data */ |
539 | } |
540 | |
541 | /* |
542 | * Something to read from the network... |
543 | */ |
544 | if (pfd[TELNET_FD_NET2].revents & (POLLIN0x0001|POLLHUP0x0010)) { |
545 | int canread; |
546 | |
547 | canread = ring_empty_consecutive(&netiring); |
548 | c = recv(net, netiring.supply, canread, 0); |
549 | if (c == -1 && errno(*__errno()) == EWOULDBLOCK35) { |
550 | c = 0; |
551 | } else if (c <= 0) { |
552 | return -1; |
553 | } |
554 | if (netdata) { |
555 | Dump('<', netiring.supply, c); |
556 | } |
557 | if (c) |
558 | ring_supplied(&netiring, c); |
559 | returnValue = 1; |
560 | } |
561 | |
562 | /* |
563 | * Something to read from the tty... |
564 | */ |
565 | if (pfd[TELNET_FD_TIN1].revents & (POLLIN0x0001|POLLHUP0x0010)) { |
566 | c = read(tin, ttyiring.supply, ring_empty_consecutive(&ttyiring)); |
567 | if (c == -1 && errno(*__errno()) == EIO5) |
568 | c = 0; |
569 | if (c == -1 && errno(*__errno()) == EWOULDBLOCK35) { |
570 | c = 0; |
571 | } else { |
572 | /* EOF detection for line mode!!!! */ |
573 | if ((c == 0) && MODE_LOCAL_CHARS(globalmode)((globalmode)&(0x01|0x02)) && isatty(tin)) { |
574 | /* must be an EOF... */ |
575 | *ttyiring.supply = termEofCharnew_tc.c_cc[0]; |
576 | c = 1; |
577 | } |
578 | if (c <= 0) { |
579 | return -1; |
580 | } |
581 | if (termdata) { |
582 | Dump('<', ttyiring.supply, c); |
583 | } |
584 | ring_supplied(&ttyiring, c); |
585 | } |
586 | returnValue = 1; /* did something useful */ |
587 | } |
588 | |
589 | if (pfd[TELNET_FD_NET2].revents & POLLOUT0x0004) { |
590 | returnValue |= netflush(); |
591 | } |
592 | if (pfd[TELNET_FD_TOUT0].revents & POLLOUT0x0004) { |
593 | returnValue |= (ttyflush(SYNCHing|flushout) > 0); |
594 | } |
595 | |
596 | return returnValue; |
597 | } |